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Gender and friendship influences adolescent alcohol use

Adolescents who drink alcohol, smoke and/or use drugs tend to have peers who do the same.

27 Nov 2007

The missing grey cells that turn people into obsessives

Scientists in the UK have discovered new evidence as to why obsessive compulsive disorder (OCD) runs in families.

26 Nov 2007

Tiny DNA molecules show liquid crystal phases, pointing to new scenario for first life on earth

A team led by the University of Colorado at Boulder and the University of Milan has discovered some unexpected forms of liquid crystals of ultrashort DNA molecules immersed in water, providing a new scenario for a key step in the emergence of life on Earth.

22 Nov 2007

Researchers find new way to transplant new blood-forming stem cells into bone marrow of mice

Researchers at the Stanford University School of Medicine have taken a small but significant step, in mouse studies, toward the goal of transplanting adult stem cells to create a new immune system for people with autoimmune or genetic blood diseases.

22 Nov 2007

Mutant mice could provide genetic clues on human sight loss

Mutant mice could provide genetic clues to understanding incurable human sight loss resulting from retinal degeneration.

22 Nov 2007

Lung transplants for cystic fibrosis may not be such a good option

Researchers in the United States say lung transplants do little to improve the outcomes for children with severe cystic fibrosis (CF) and often increases their risk of dying.

22 Nov 2007

Vitamin E can significantly reduce risk of heart attacks for diabetics with certain gene variant

Vitamin E supplements can significantly reduce the risk of heart attacks and related deaths for diabetics who carry a particular version of a gene, according to researchers at the Technion-Israel Institute of Technology and the Clalit Health Services in Israel.

21 Nov 2007

Peptide therapy used to prevent progression of Parkinson's

Researchers have successfully used a peptide to reverse biochemical, cellular and anatomical changes that occur in the brains of mice with Parkinson's disease (PD), and report success in preventing the disease from progression.

21 Nov 2007

First genome sequence of XDR strain of the bacterium Mycobacterium tuberculosis

An international collaboration led by researchers in the US and South Africa today announced the first genome sequence of an extensively drug resistant (XDR) strain of the bacterium Mycobacterium tuberculosis, one linked to more than 50 deaths in a recent tuberculosis (TB) outbreak in KwaZulu-Natal, South Africa.

21 Nov 2007

Antidepressant drug mianserin extends the lifespan of adult roundworms

A team of scientists led by Howard Hughes Medical Institute (HHMI) investigator Linda B. Buck has found that a drug used to treat depression can extend the lifespan of adult roundworms.

21 Nov 2007

New technique provides stem cells without ethical and legal constraints

In a paper to be published Nov. 22 in the online edition of the journal Science, a team of University of Wisconsin-Madison researchers reports the genetic reprogramming of human skin cells to create cells indistinguishable from embryonic stem cells.

21 Nov 2007

Human pluripotent stem cells without human cloning

Two major scientific papers published this week in Science and Cell unveil a proven way to generate patient-matched human pluripotent stem cells without human cloning, and without the use of human embryos or human or animal eggs.

21 Nov 2007

Research shows how embryonic cells may regulate levels of retinoic acid

Human embryos that get too much or too little retinoic acid, a derivative of Vitamin A, can develop into babies with birth defects.

21 Nov 2007

Advancing stem cell research and therapies while fully respecting the dignity of human life

The following statement was released by Cardinal Justin Rigali of Philadelphia, chairman of the Committee for Pro-Life Activities at the United States Conference of Catholic Bishops.

21 Nov 2007

Human skin could be a new source of stem cells

A simple recipe—including just four ingredients—can transform adult human skin cells into cells that resemble embryonic stem cells, researchers report in an immediate early publication of the journal Cell, a publication of Cell Press.

21 Nov 2007

Japanase scientists reprogramme human adult cells to function like pluripotent embryonic stem cells

Acclaimed stem cell researcher Shinya Yamanaka, MD, PhD, has reported that he and his Kyoto University colleagues have successfully reprogrammed human adult cells to function like pluripotent embryonic stem (ES) cells.

21 Nov 2007

New human rhinovirus associated with pediatric respiratory tract infection in Germany

Using a rapid, sensitive, and inexpensive diagnostic tool called MassTag PCR, scientists at Columbia University Mailman School of Public Health's Center for Infection and Immunity implicated a new human rhinovirus as the cause of severe pediatric respiratory tract infections in Europe.

21 Nov 2007

Sexy dads produce sexy sons, in the insect world at least

While scientists already knew that specific attractive traits, from cricket choruses to peacocks' tails, are passed on to their offspring, the heritability of attractiveness as a whole is more contentious. Now, new research by the University of Exeter, published (20 November) in Current Biology, shows that attractiveness is hereditary.

21 Nov 2007

Discovery of 300 previously unidentified human genes

Using supercomputers to compare portions of the human genome with those of other mammals, researchers at Cornell have discovered some 300 previously unidentified human genes, and found extensions of several hundred genes already known.

21 Nov 2007

The science of cancer health disparities in racial/ethnic minorities and the medically underserved

The latest biological, clinical and social research behind how cancer affects different racial and ethnic groups will be the focus of the first American Association for Cancer Research conference on the topic, entitled "The Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved."

21 Nov 2007